fix: build-all.bat updatd with LastExitCode

build-all.bat

@@ -1,2 +1,2 @@
-PowerShell.exe -NoProfile -ExecutionPolicy Bypass -Command "& './BuildDocs.ps1' -BuildAll"
+PowerShell.exe -NoProfile -ExecutionPolicy Bypass -Command "& './BuildDocs.ps1' -BuildAll; exit $LastExitCode"
 if %errorlevel% neq 0 exit /b %errorlevel%